text: After her return to England, Humphrey joined the staff of Arthur Sanderson & Sons, a British manufacturer of fabrics and wallpaper, where she worked until she retired. She was employed as a research chemist at their factory in Chiswick, but little is known of her work there. In the 1911 census, she was living in Hampstead with her two elder sisters, and gave her profession simply as "chemist".
  In 1904, Humphrey was one of nineteen women chemists to petition the Chemical Society for admission of women to fellowship. This was eventually granted in 1920 after the Sex Disqualification (Removal) Act 1919 was passed. Humphrey was subsequently elected to fellowship on 4 May 1933, twenty-nine years after she signed the first petition to the society.
  An interview with Humphrey about her experiences in Zurich was published in the New Scientist on her 100th birthday, 11 September 1975.
  Edith Humphrey died on 25 February 1978 in Highgate, London.
  In July 2023, the Oxford Dictionary of National Biography published an entry on Humphrey.